Nabokoite

Formula: Cu7TeO4(SO4)5.KCl

Origin of name: for S. Naboko, Russian mineralogist

 

Crystal system: tetragonal

Crystal class: 4/m 2/m 2/m

Twinning: 

Unit cell: 

 

Colour: yellow-brown

Diaphaneity: transparent

Luster: vitreous

Habit: thin tabular crystals to 1 mm across

Hardness: 2 to 2.5

Specific gravity: 4.18

Cleavage: 1; {001} perfect

Tenacity: 

Streak: yellow-brown

 

Synonyms/varieties:

 

Comments: series with atlasovite

 

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